Bug#463076: xserver-xorg-video-ati: machine freezes when X is stopped or second X started

[Alex Deucher]

On Jan 29, 2008 1:20 PM, Bram Senders <bram at luon.net> wrote:
> On Tue, 2008-01-29 at 17:58 +0100, Brice Goglin wrote:
> > Bram Senders wrote:
> > > The following versions all exhibit the same problem:
> > > 1:6.7.198~git20080117.6bd510a2-1
> > > 1:6.7.198~git20080109.10e7636c-1
> > > 1:6.7.198~git20080102.30cab1db-1
> > > 1:6.7.198~git20080101.f65374f5-1
> > >
> > > I then tried version 1:6.7.198~git20071221.be7f8fd3-1, but this one has
> > > the "old" bug #457563 again, where the freeze already occurs on startup,
> > > and trying "AGPMode" "4" or "BusType" "PCI" then still causes a freeze
> > > on startup.  So I cannot use this version... I assume earlier versions
> > > have the same bug?
> >
> > No, I think #457563 appeared in 6.7.197 and was not in 6.7.196 or earlier.
>
> Okay, after some experimenting I have found that 1:6.6.193-2 is the
> newest version which doesn't cause the lockups, and the version after
> that, 1:6.7.191-1, causes the system to freeze -- either by stopping X
> or by starting a second one.  So something went wrong from 1:6.6.193-2
> to 1:6.7.191-1.
>
> How do I debug this further?

You could try git bisect to track down the change that caused the
problem.  Unfortunately, the changes between 6.6.19x and 6.7.19x are
substantial (much of the driver was restructured) and it may be hard
to track down.

Alex